The Power Plant in Your Driveway

Happy almost-July, everyone, and welcome back to my corner of the internet. It’s hot out, the grid is working overtime to keep us cool, and the World Cup is in full swing (anyone watching?). I imagine somewhere a utility operator is looking at the 5 p.m. demand curve spike and stressing. Or maybe it’s all automated these days. Either way, this feels like the right month to talk about the grid that we rely on every day and how electric vehicles fit into this large, complex system.

I primarily talk about electric vehicles (EVs) as cleaner transportation, and they are. But I think it’s time we started talking about them as something even bigger: a community resilience asset. A battery on wheels. Tens of thousands of them scattered across our neighborhoods—already bought and paid for, sitting idle most of the day. When you think about it that way, the “vehicle” part might be the least interesting thing about them.

Let me back up. Did you know that the average car spends about 95% of its life parked —just sitting there depreciating? Now make that car electric, and that parked vehicle becomes a 60 –130 kilowatt-hour battery sitting fully charged in your street, driveway, or garage. Meanwhile, a few feet away, your house is drawing power from a grid supplied by power plants miles and miles away. Something about that arrangement has always struck me as a little absurd. I understand the value and economic sense of building large, centralized systems that operate more efficiently. But there’s something that feels good about contributing locally, closer to where energy is actually used.

I think there’s room for both; kind of like relying on commercial farmers across the country while also growing some of your own food.

The Small Version

The easiest way to understand EVs as an energy asset is during an outage. With the right vehicle and the right hardware, your car can run your house when the power goes out.

This isn’t a someday thing. It’s happening right now. GM’s bidirectional charging on the Equinox EV, Sierra EV, and Cadillac Lyriq can turn the car into a backup generator for your home —keeping the fridge running, the lights on, and even the AC going with an enablement kit, the system is designed to keep power from flowing back onto the grid while utility crews are working to restore service (a genuinely important detail!). The Ford F-150 Lightning has done whole-home backup for a couple years now. Tesla’s Powershare claims something like three days of backup with a Cybertruck.

If you’ve ever ridden out a multi-day outage, you already get the value. You own a back-up battery —it’s just pretending to be a car.

The Big Version

One EV backing up one house is a nice perk. Coordinate a few thousand of them across a city, and you’ve got something called a virtual power plant (VPP). It’s essentially a network of distributed energy assets that can be pooled together and used like a single e power plant.

Another term to keep in mind is vehicle-to-grid (V2G), and it’s where I spend a lot of my working hours lately. When the July heat waves come, people will be blasting their AC, and utilities usually meet that demand spike by firing up expensive, high-emission peaker plants. A fleet of plugged-in cars feeding back small amounts of power can support the grid, and with enough assets, the utility may not need to turn on those peakers at all.

The example I keep returning to lately is GM and Pacific Gas and Electric Company (PG&E). Their plan has more than 52,000 GM EVs participating in grid-balancing by 2030, providing backup during wildfire-related outages and reducing the need for public-safety power shutoffs in California. The strategy for keeping the lights on during fire season leans on the cars people already bought, organized into a coordinated resource, instead of a new gas plant or a transmission line that can take more than a decade to permit.

That’s the part that stays with me. On its own, your EV is a handy backup for a bad night. Pool a few thousand of them together, and the grid suddenly has something real (and clean) to lean on.

Why This Matters

The grid is under real strain, and it’s coming from every direction at once: heat, data centers, and the broad electrification of basically everything. Building new generation and transmission is slow, pricey, and tends to die in permitting or local opposition. Meanwhile the number of batteries quietly parking in American driveways goes up every single month.

Distributed energy also has a specific advantage over centralized energy in a way that’s easy to miss. When one big backup plant fails, an entire region can go dark. Fifty thousand EVs in fifty thousand driveways don’t share a single switch that takes everything offline. The resource is already sitting where the people are, which is exactly where you want it.

There’s money in it too… eventually. Pilot programs have been paying participants somewhere in the $400 —$800-a-year range. Volkswagen is rolling out a commercial V2G offer in Germany late this year that pencils out to as much as €900 a year, with a stated goal of charging costs close to zero. Europe’s ahead of us here, and they usually are, but you can see where this is headed by watching them.

The Honest Part

I’d be selling you something if I told you this was simple, so let me be straight with you. The hardware costs real money. A bidirectional charger plus the home equipment runs a few thousand dollars more than a plain Level 2 setup. The payback works in high-rate or outage-prone areas and gets shakier where power is cheap and reliable. Vehicle support is still patchy. And the V2G programs that actually pay you depend entirely on your utility offering one where you live (mine doesn’t yet). Interconnection rules and certification standards are still settling.

But here’s what keeps me optimistic. Every one of those is simply a coordination puzzle that gets solved with enough time, volume, and decent policy. The physics already works. Hardware gets cheaper at scale. Standards converge. Programs spread once the early ones prove themselves, and they’re proving themselves right now.

What You Can Do

Next time grid reliability comes up, or next time you’re shopping for an EV, ask a bigger question than range and charging speed. Ask whether it can give power back. Ask whether your utility has a program, and if it doesn’t, ask why not. Ask what it would take for your whole street, not just your house, to stay lit when the next big storm rolls through.

The battery is already in the driveway. We just have to decide to use it.